Detector mechanism



Sept. 6, 1955 F. scHAUM 2,716,858

DETECTOR MECHANISM Filed April 30, 1952 2 Sheets-Sheet l INVENTOR. FLETCHER SCHAUM B25 ma ATTORNEY.

INVENTOR.

ATTORNEY- F. SCHAUM DETECTOR MECHANISM 40a. Am

FIG. 3

Sept. 6, 1955 Filed April 50, 1952 IIb 25 FLETCHER scHAUM FIG.6

DETECTOR MECHAN ISM Fletcher Schaum, Philadelphia, Pa? assigiior to Fletcher Works Incorporated, Philadelphia, Pa., a corporation of Pennsylvania Application April 30, 1952, Serial N o. 285,150

6 Claims. (Cl. 57-80) This invention relates to apparatus for detecting broken or exhausted yarns in winding machines and the like and it relates more particularly to improved yarn break or exhaustion detecting mechanism for machines in which a plurality of yarns are being brought together by twisting, doubling and the like.

It is the principal object of the present invention to provide yarn break or exhaustion detecting mechanism for a plurality of yarns in a group, the breaking or absence of any one of which is utilized to stop the winding of the particular yarn package to which the group is being supplied.

It is a further object of the present invention to provide yarn break or exhaustion detector mechanism which is simple in construction, reliable in operationand which is particularly suitable for installation on winding machines now in use.

It is a further object of the present invention to provide yarn break or exhaustion detector mechanism capable of accommodating a relatively large number of yarns or strands.

lt is a further object of the present invention to provide yarn break or exhaustion detector mechanism in which a resiliently mounted receptacle or holder isemployed for supporting a plurality of drop wires in a group. p

Other objects and advantageous features of the invention will be apparent from the specification and claims.

The nature and characteristic features of the invention will be more readily understood from the following description taken in connection with the accompanying drawings forming part hereof, in which:

Figure l is a vertical transverse sectional View through a winding machine having the detecting mechanism in accordance with the invention mounted thereon;

Fig. 2 is a fragmentary transverse elevational view of a portion of the machine, enlarged, showing the detecting mechanism;

Fig. 3 is a top plan View of the mechanism shown in Fig. 2; i

Fig. 4 is a front elevational view of the mechanism shown in Fig. 2; and l l Figs. 5 and 6 are fragmentary views taken respectively on the lines 5 5 and 6-6 of Fig. 4.

It should, of course, be understood that the description and drawings herein are yillustrative merely, and that various modifications and changes may be made in the structure disclosed without departing from the spirit 0f the invention.

Like numerals refer to like parts throughout the several views.

Referring now more particularly to the drawings, a fragmentary portion of a machine is illustrated which includes opposite spindles of a pair of rows of vertical spindles, each carried by a resiliently swingable bracket 10a on a rail 11a forming part of the machine frame 11, and having a whorl 12 resiliently held in driving engagement with a spindle belt 13 but movable away from nite States Patent 0 ICC the belt 13 for stopping. A ring rail 14, having a spinning or twisting ring 15 and follower 15a thereon for each spindle 10, is provided for vertical reciprocatory movement by any desired mechanism (not shown) but which is well known in the art. The customary feed rolls 16 may also be provided and like the spindle 10 are preferably resiliently swingably mounted on a rail (not shown) forming part of the Iframe 11 for actuation for movement to one position yfor driving and another for stopping.

In order to control the actuation of each of the spindles 10 and its associated feed rolls 16, a vertical control shaft 17 is provided for each spindle 10, having a spring 18 for normally impelling it in a counterclockwise direction. The shaft 17 has a cam 19 at its lower end for engagement with the bracket 10a to move the whorl 12 out of driving engagement with the belt 13. The shaft 17 is also provided with a positioning fork 20 for moving the feed rolls out of driving engagement. The shaft 17 has a handle 21 for manual resetting. At the upper end of the shaft 17 a control cam 22 is provided having a notch 23 and an adjoining cam surface 24.

A rocker shaft 25 is provided, oscillated in timed relation to the ring rail 14 in any desired manner and having a rocker 26 thereon with ari end face 27 for purposes to be explained.

At the upper part of the machine frame 11, the customary creel C may be provided with the number of yarn packages desired in accordance with the number of yarns to be delivered to each spindle 10.

The structure heretofore described is known in the prior art and has been described as the setting for and to aid in the understanding of the invention.

On a rail 11b, forming part of the machine frame 11, a bracket 30 is provided having a vertical plate portion 31 and a horizontal plate portion 32. The bracket 30 may be secured to the rail 11b in any desired manner such as by a bolt 33. Extending forwardly from the upper part of the plate portion 32 and perpendicular thereto, wings 34 are provided.

A holder box 35, having a front plate 36 and side plates 37, is pivotally connected at the lower part of the side plates 37 to the wings 34 by a horizontally disposed pin 38. A spring 39', carried by the pin 38 is in engagement at one end with one of the wings 34 and at the other end with the plate 31 and normally urges the upper end of the box inwardly.

At a location spaced from the top of the box 35, a horizontally disposed drop wire mounting pin 39 is provided, carried by Athe side plates 37. The pin 39 is adapted to carry a plurality of drop wire holders 4l), each in the form of a lever made as a metal stamping, and freely pivotally mounted on the pin 39, with spacers 40a therebetween. The removal of the spacers 46a permits the mounting of additional drop wire holders 4t) on the pin 3K9. The holders 48 are each provided with a forwardly extending arm 41 and angularly upwardly extending arm 42 disposed at an acute angle with respect to the arm 4l. The upwardly extending arms 4f'. each have closed sockets 43 for the reception of drop wires 44. The drop wires 44 each have end guide eyes 45 of porcelain or other wear resistant material. The end terminals of the forwardly extending arms 41 serve as abutments under certain conditions for engagement by the rocker end face 27, as hereinafter explained.

Extending between the side plates 37, a limit or stop pin 46 is provided for limiting the downward movement of the arms 41. rI`he inner face of the plate 36 limits the outward or upward movement of the arms 42. Each holder 40 thus occupies either an upper position when its drop wire guide eye 45 is held up by the yarn, or a lower position when not held up by the yarn. In the lower position, the end terminals of any of the arms 41 are in a position for engagement by the rocker end face 27 and in the upper position these end terminals are above the path of movement of the end face 27.

Drop wires 44 are provided in accordance with the number of yarns to be supplied to the spindle and the remaining drop wire holders 40 may be held in upward and inactive positions by guard hooks (not shown) which engage in the sockets 43 and extend downwardly and engage the inner face of the front plate 36.

A drop wire holder 49 for the plied yarn is also freely pivotally mounted on the pin 39, is preferably in the form of a segment shaped weight and has a drop wire 50 carried therein with a yarn engaging hooked end 51. The holder 49 has an end face 52 which functions in a similar manner to the terminal ends of the arms 41.

On one side plate 37 of the box 35, a cam engaging arm 55 is provided which is adapted to engage in the notch 23 of the cam 22 in normal operating position or to engage on the cam surface 24 after a break in or exhaustion of any one of the separate yarns, or in the plied yarns has occurred.

The mode of operation will now be pointed out.

The yarns or ends from the yarn packages in the creel C respectively pass through one of the yarn guide eyes 45 and then around the feed rolls 16 and up over the end 51 and then to the ring 15 where it is applied to the spindle 1t). In running condition the shaft 17 is in the position in which the cam 19 is out of action and the whorl 12 is in driven engagement with the belt 13, the fork positions the feed rolls 16 in driven position, and the arm 55 is engaged in the notch 23 in the cam 22.

The rocker shaft 25 is continuously oscillated. Reciprocation of the ring rails 14 as the spindles 10 are rotated results in the winding of a yarn package on the spindle 10.

Upon the occurrence of a break in or exhaustion of the supply of any one of the yarns passing through a guide eye 45, that guide eye 45 is no longer held in its upper position and it swings inwardly so that its holder also drops with the arm 41 thereof resting on the bar 46.

ln a similar manner release of the yarn guiding end 51 permits the falling of the drop wire holder 49.

As the rocker shaft 25 oscillates the rocker 26, the end face 27 thereof engages the terminal end of the fallen arm 41 or end face 52 and moves the arm 41 or holder 49 and the box 35, outwardly, against the force of the spring 39. As the box 35 moves outwardly the arm 55 is withdrawn from the notch 23 in the control cam 22. The spring 1S turns the control shaft 17 to whorl and feed roll disengaging position and so that the arm 55 engages the cam surface 24.

Upon repair of the broken yarn or replenishing of the supply and threading or rethreading through the guide eyes and over the guide end 51, the control shaft 17 may be reset by manually moving the handle 21 to permit the arm to again engage in the notch 23 and hold the control cam 22 and control shaft 17 in position for winding.

l claim:

1. Apparatus for detecting yarn break or exhaustion in machines having oscillatory rocker members and yarn feed control mechanism comprising a support, a holder, spring hinge members interposed between said support and said holder, said holder having a front plate portion, a mounting pin in said holder, a limit pin in said holder spaced from said mounting pin, a plurality of drop wire carriers pivotally mounted on said mounting pin and having abutment portions engaging with said limit pin in one position of said carriers, drop wires carried by said carriers having guide eyes each for engagement with a yarn and held by the yarns in positions with said abutment portions spaced with respect to said limit pin, and a movable positioning member for said holder connected to said control mechanism, said abutment portions being engageable by a rocker member in said one position of one of said carriers for moving said holder against the force of said spring hinge members and permitting movement of said positioning member.

2. Apparatus for detecting yarn break or exhaustion in machines having oscillatory rocker members and yarn feed control mechanism comprising a support, a holder, spring hinge members interposed between said support and said holder, said holder having a front plate and side plates extending therefrom, a mounting pin extending between said side plates, a limit pin extending between said side plates in spaced relation to said mounting pin, a plurality of drop wire carriers pivotally mounted on said mounting pin and having abutment portions engaging with said limit pin in one position of said carriers, drop wires carried by said carriers having guide eyes each for engagement with a yarn and held by the yarns in positions with said abutment portions spaced with respect to said limit pin, and a movable positioning member for said holder connected to said control mechanism, said abutment portions being engageable by a rocker member in said one position of one of said carriers for moving said holder against the force of said spring hinge members and permitting movement of said positioning member.

3. Apparatus for detecting yarn break or exhaustion in machines having oscillatory rocker members and yarn feed control mechanism comprising a support, a holder pivotally connected to said support on a horizontal piv otal axis, a resilient member interposed between said support and said holder and tending to swing said holder about said pivotal axis, said holder having a front plate and side plates normal thereto, a mounting pin extending between said side plates, a limit pin extending between said side plates below said mounting pin, a plurality of drop wire carriers pivotally mounted on said mounting pin and having abutment portions engaging with said limit pin in one position of said carriers, drop wires carried by said carriers having guide eyes each for engagement with a yarn and held by the yarns in positions with said abutment portions elevated with respect to said limit pin, and a movable positioning member for said holder connected to said control mechanism, said abutment portions being engageable by a rocker member in said one position of one of said carriers for moving said holder against the force of said resilient member and permitting movement of said positioning member.

4. Apparatus for detecting yarn break or exhaustion in machines having oscillatory rocker members and yarn feed control mechanism comprising a support, a holder pivotally connected to said support on a horizontal pivotal axis, a resilient member interposed between said support and said holder and tending to swing said holder about said pivotal axis, said holder having a vertical front plate and side plates normal thereto, a horizontally disposed mounting pin extending between said side plates, a limit pin extending between said side plates and spaced from said mounting pin, a plurality of drop wire carriers pivotally mounted on said mounting pin, said drop wire carriers each having an upwardly extending portion and an outwardly extending abutment portion at an acute angle with respect to said upwardly extending portion, said carriers being movable between limiting positions as determined by the inner face of the front plate and said limit pin, drop wires carried by said upwardly extending portions each having a guide eye for engagement with a yarn and held by the yarns in positions with said abutment portions spaced with respect to said limit pin, and a positioning member for said holder connected to said control mechanism, said abutment portions being engageable by a rocker member in the limiting position as determined by said limit pin for moving said holder against the force of said resilient member and permitting movement of said positioning member.

5. Apparatus for detecting yarn break or exhaustion in machines having oscillatory rocker members and yarn feed control mechanism comprising a support, a holder pivotally connected to said support on a horizontal pivotal axis, a resilient member interposed between said support and said holder and tending to swing said holder about said pivotal axis, said holder having a vertical front plate and side plates normal thereto, a horizontally disposed mounting pin extending between said side plates. a horizontally disposed limit pin extending between said side plates and spaced from said mounting pin, a plurality of drop wire carriers pivotally mounted on said mounting pin, said drop wire carriers each having an upwardly extending portion and an outwardly extending abutment portion at an acute angle with respect to said upwardly extending portion, said carriers being movable between limiting positions as determined by the inner face of the front plate and said limit pin, drop wires carried by said upwardly extending portions each having a guide eye for engagement with a yarn and held by the yarns in positions with said abutment portions spaced with respect to said limit pin, and positioning members for said holder including an arm extendingr from said holder and a cam connected to said control mechanism and having a plurality of positioning faces engageable by said arm, said abutment portions being engageable by a rocker member in the limiting position as determined by said limit pin for moving said holder against the force of said resilient member and permitting engagement of said arm with a pretermined cam positioning face.

6. In apparatus for detecting yarn break or exhaustion a support, a holder pivotally connected to said support, said holder having a vertical front plate and side plates extending from the inner face of said front plate, a horizontally disposed mounting pin extending between said side plates and spaced from said inner face, a horizontally disposed limit pin extending between said side plates and spaced from said mounting pin, drop wire carrier pivotally mounted on said mounting pin, said drop wire carrier having an upwardly extending portion and an outwardly extending abutment portion at an acute angle with respect to said upwardly extending portion and facing away from said inner face, said carrier being movable between limiting positions as determined by said inner face and said limit pin, a drop wire carried by said upwardly extending portion and having a guide eye for engagement with a yarn and held by the yarn in a position with said abutment portion spaced with respect to said limit pin, and a holder positioning arm extending from said holder.

References Cited in the iile of this patent UNITED STATES PATENTS 2,257,654 Schaum Sept. 30, 1941 

